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from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Tending to produce or aggravate acne.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Tending to produce acne, i.e. comedones
  • n. A substance that tends to produce acne, such as by clogging pores on the skin


comedo + -genic.
(American Heritage® Dictionary of the English Language, Fourth Edition)
comedo +‎ -genic (Wiktionary)



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  • Pamelad, that's exactly what I think when I come across this word!

    February 26, 2007

  • Amuses you as it blocks your pores.

    February 26, 2007